Sharp AF-T908X Service Manual page 25

Symptom
Fan motor runs
1) No current runs.
but compressor
(Compressor
doesn't operate
circuit)
2) Current runs.
(Before operating
current, capacitor
normal)
3) High current draw
4) High current draw
compressor
operates but
stops immediately
Compressor trys to 1) Check power
start source voltage,
start voltage drop
1) Check power line
With switch set for
fuse or circuit
cooling, fuse or
breaker
circuit breaker open
2) Check power
source voltage
3) Check compressor
4) Insulation test on
compressor
Check
1) Overload relay defective
2) Compressor coil burnt out
3) Wiring disconnected or burnt out
1) Compressor (main winding)
burnt out
2) Compressor relay defective
1) Compressor locked
2) Compressor (Auxiliary winding)
burn out
3) Overload relay contact burn out
4) Capacitor defective
5) Compressor winding short
1) Compressor winding short
2) Heat source near to air
conditioner
3) Partial restriction in sealed
system
1) Power source voltage too low
2) Wiring for power supply
equipment too small
1) Insufficient capacity of fuse
2) Circuit breaker "OFF"
Power source cut off or contact
defective
1) Compressor locked
2) One connection terminal of
compressor burn out
3) One core of lead of compressor
burn out
Circuit insulation defective
Defect
25
AF-T908X
AF-R908X
AF-R1108X
AF-R1208X
Remedy
1) Change overload relay
2) Change compressor
3) Connect
1) Change compressor
2) Change PWB ass'y
1) Change compressor
2) Change compressor
3) Change overload relay
4) Change capacitor
5) Change compressor
1) Change compressor
2) Remove heat source
3) Check sealed system
1) Improve the supply
2) Improve power
equipment
1) Change to rated fuse
2) Circuit breaker "ON"
Repair
1) Change compressor
2) Solder terminal
3) Change compressor
Change compressor